Inventor
Ivan Sheiham
Inventor
Marlow, GB
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B41Mprimary
B41MPrinting, duplicating, marking, or copying processes69%
Y10TTechnical subjects covered by former us classification15%
C07CAcyclic or carbocyclic compounds8%
C07DHeterocyclic compounds8%
PatentTitleYear
6,509,295'Record material for pressure-sensitive copying systems'20036,103,662'Pressure-sensitive copying paper'20005,811,367'Pressure-sensitive copying material'19985,605,874'Pressure-sensitive copying material'19975,478,380'Chromogenic composition for use in pressure-sensitive record material'19955,476,829'Pressure-sensitive copying material'19955,472,489'Solvent compositions for use in pressure-sensitive copying paper'19955,364,830'Record material using vinyl carbinol color formers'19945,281,266'Solvent compositions for use in pressure-sensitive copying paper'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–1998Patents assigned to WIGGINS TEAPE GROUP LTD (7)· patent assignee history
1994–2000Based in Marlow, GB· patent location history
2000–2003Patents assigned to ARJO WIGGINS LTD (2)· patent assignee history
2003Based in Buckinghamshire, GB· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| WIGGINS TEAPE GROUP LTD | 7 | 1994–1998 |
| ARJO WIGGINS LTD | 2 | 2000–2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Marlow, GB | 8 | 1994–2000 |
| Buckinghamshire, GB | 1 | 2003 |